Head mounted display system and head mounted display used for same, and operation method for same

ABSTRACT

There are provided an HMD system capable of improving operability by realizing various input operations on a head mounted display (HMD), an HMD used therefor, and an operation method therefor. Therefore, in the HMD system, an HMD allowing an operation input from an external operation device is connected to a plurality of external operation devices. The external operation device is a device worn on the body of a user who uses the HMD, includes a sensor for detecting movement, and transmits operation information by moving the external operation device. The HMD includes a short-range wireless communication unit and an operation control unit. Operation information from the plurality of external operation devices is received through the short-range wireless communication unit. The operation control unit executes a predetermined operation based on the operation information received from the plurality of external operation devices.

CROSS-REFERENCE OF RELATED APPLICATION

This application is the U.S. National Phase under 35 U.S.C. § 371 of International Patent Application No. PCT/JP2019/027158, the entire disclosure of which Application is incorporated by reference herein.

TECHNICAL FIELD

The present invention relates to an HMD system including a head mounted display (HMD) and a controller for the HMD.

BACKGROUND ART

In recent years, an HMD having a display and worn on the head to view information is gradually spreading in the field of game applications or work support. In the HMD, both hands are free, but there are various methods for inputting an operation because there is no established method. For example, voice input has a disadvantage that it is difficult to separate the voice from ambient noise. In addition, input by gesture can be operated by performing a specific movement within a recognition range, but a wide movement range and performing a specified hand or finger movement are required. For this reason, there are restrictions in terms of movement recognition and work range.

Patent Document 1 is a related art in this technical field. Patent Document 1 discloses a ring-type device that detects the angular velocity or acceleration of movement by using a built-in sensor and transmits the information thereof.

CITATION LIST Patent Document

-   Patent Document 1: JP 2016-76105 A

SUMMARY OF THE INVENTION Problems to be Solved by the Invention

The HMD has an advantage that both hands of the user can be freely used. However, in the ring-type device disclosed in Patent Document 1, operations that can be input are limited, which causes inconvenience when handling various kinds of information. Therefore, there remains a problem that the degree of freedom of the user's operation is reduced.

The present invention has been made to solve the aforementioned problem, and an object thereof is to provide an HMD system with improved operability so that various operations can be performed on the HMD while ensuring the degree of freedom of both hands, an HMD used therefor, and an operation method therefor.

Solutions to Problems

In order to solve the aforementioned problem, the present invention is, for example, an HMD system in which an HMD allowing an operation input from an external operation device is connected to a plurality of external operation devices. The external operation device is a device worn on a body of a user who uses the HMD, includes a sensor for detecting movement, and transmits operation information by moving the external operation device. The HMD includes a short-range wireless communication unit and an operation control unit. Operation information from the plurality of external operation devices is received through the short-range wireless communication unit. The operation control unit executes a predetermined operation based on the operation information received from the plurality of external operation devices.

Effects of the Invention

According to the present invention, it is possible to provide an HMD system capable of improving operability by realizing various input operations on the HMD, an HMD used therefor, and an operation method therefor.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a wearing state of an HMD system in an embodiment.

FIG. 2 is a diagram showing an operating state of short-range wireless communication of an HMD in the embodiment.

FIG. 3 is a hardware configuration diagram of the HMD system in the embodiment.

FIG. 4 is a schematic diagram of another wearing state of the HMD system in the embodiment.

FIG. 5 is another hardware configuration diagram of the HMD system in the embodiment.

FIG. 6 is a diagram showing the appearance of a ring-type controller in the embodiment.

FIG. 7 is a hardware configuration diagram of the ring-type controller in the embodiment.

FIG. 8 is a diagram showing an activation operation of the ring-type controller in the embodiment.

FIG. 9 is a diagram showing a vector definition of the movement direction of left and right ring-type controllers in the embodiment.

FIG. 10 is a diagram showing an HMD display in the movement direction of the ring-type controller in the embodiment.

FIG. 11 is a diagram showing an operation of activating and stopping two ring-type controllers in the embodiment.

FIG. 12 is a process flowchart when connecting two ring-type controllers to the HMD in the embodiment.

FIG. 13 is a diagram showing an operation for switching an operation mode in a dual mode in the embodiment.

FIG. 14 is a diagram showing another operation for switching the operation mode in the dual mode in the embodiment.

FIG. 15 is a diagram showing another operation for switching the operation mode in the dual mode in the embodiment.

FIG. 16 is a diagram showing another operation for switching the operation mode in the dual mode in the embodiment.

FIG. 17 is a diagram showing a configuration example of a game machine and a ring-type controller in the embodiment.

MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of the present invention will be described with reference to the diagrams. In addition, the same components and processes are denoted by the same reference numerals throughout the diagrams, and the repeated description thereof will be omitted.

Embodiments

FIG. 1 is a schematic diagram of the wearing state of an HMD system in the present embodiment. As shown in FIG. 1 , the HMD system includes an HMD 100 worn on the user's head, a smartphone 200, a right ring-type controller 300, and a left ring-type controller 400. The smartphone 200 is communicably connected to the HMD 100 through a short-range wireless communication line to transmit and receive information. In addition, information may be transmitted and received to and from the smartphone 200 by wire.

A server 500 searches for information according to an instruction from the smartphone 200 or provides the content to be displayed on the HMD 100 through an external network 600.

The right ring-type controller 300 and the left ring-type controller 400 are communicably connected to the HMD 100 through a short-range wireless communication line to transmit the operation information of the ring-type controllers to the HMD 100. Here, one or two ring-type controllers can be connected to the HMD and operated at the same time.

FIG. 2 is a diagram illustrating an operating state of short-range wireless communication device of the HMD in the present embodiment. As shown in FIG. 2 , the short-range wireless communication of the HMD is connected to the smartphone 200, the right ring-type controller 300, and the left ring-type controller 400. Therefore, for example, it is possible to operate at the same time by dividing the wireless communication in time so as to communicate with each device.

FIG. 3 is a hardware configuration diagram of the HMD system in the present embodiment. As shown in FIG. 3 , the HMD 100 includes a camera 111, an in-camera 112, a distance measuring sensor 113, an illuminance sensor 114, an acceleration sensor 115, a gyro sensor 116, a geomagnetic sensor 117, a GPS receiver 118, and a short-range wireless communication device 123, a controller 130, and a display 150. In addition, the controller 130 includes a CPU 131, a memory 132, and an operation control 135, and the memory 132 has a program 133 and information data 134.

The short-range wireless communication device 123 is a communication interface for performing short-range wireless communication between the HMD 100 and the right ring-type controller 300, the left ring-type controller 400, and the smartphone 200. The short-range wireless communication device 123 is configured to include communication devices corresponding to, for example, Bluetooth (registered trademark), IrDA (Infrared Data Association), Zigbee (registered trademark), HomeRF (Home Radio Frequency (registered trademark)), wireless LAN (IEEE802.11a, IEEE802.11b, IEEE802.11g), NFC (Near-Field-Communication), and the like.

The right ring-type controller 300 and the left ring-type controller 400 are connected to the HMD 100 through the short-range wireless communication device 123. The HMD 100 receives operation information received by the right ring-type controller 300 and the left ring-type controller 400 through the short-range wireless communication line. The received operation information is for detecting what kind of input operation has been performed by the operation control 135, and is transmitted to the CPU 131 so that processing according to the operation content is performed.

The CPU 131 loads and executes the program 133 stored in the memory 132, and reads out the information data 134 as needed to use the information data 134 for the execution process of the program 133. By using the CPU 131, the controller 130 analyzes information from various sensors, processes information of the operation control 135, transmits and receives information to and from the smartphone 200, and creates a display screen on the display 150, thereby controlling the entire HMD. Here, when the ring-type controller has a function of calculating the output of each sensor, the information regarding the movement may be calculated and processed in the ring-type controller and then transmitted to the HMD 100.

FIG. 4 is a schematic diagram of another wearing state of the HMD system in the present embodiment. In FIG. 4 , the same functions as in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted. As shown in FIG. 4 , the HMD 100 is configured to connect to the server 500 by itself through the external network 600 without a smartphone. In this case, the HMD has functions of calculation processing, image processing, communication processing, and the like performed by the smartphone.

In addition, FIG. 5 is a hardware configuration diagram of an HMD system corresponding to FIG. 4 . In FIG. 5 , the same functions as in FIG. 3 are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 5 is different from FIG. 3 in that a network communication device 120 is provided in the HMD 100, and the HMD 100 is connected to the external network 600 without a smartphone.

The network communication device 120 is a communication interface for communicating with an external server by wireless LAN, wired LAN, or base station communication, and is connected to the external network 600 to transmit and receive information to and from the server 500. The network communication device 120 is configured to include communication devices corresponding to long-distance wireless communication standards, such as W-CDMA (Wideband Code Division Multiple Access) (registered trademark) and GSM (Global System for Mobile communications) (registered trademark).

FIG. 6 is a diagram showing the appearance of the right ring-type controller 300 in the present embodiment. In FIG. 6 , a press switch 201 can control the power supply or switch the operation by a long press or a short press operation. A touch pad 202 can detect a position touched by a human finger by using, for example, a capacitive sensing method, and can detect an operation instruction depending on which direction the position has moved. Here, as shown by the cross-shaped arrow, an example of a touch pad that can detect operations in the up, down, left, and right directions using the adjacent thumb is shown. A protrusion 203 is provided on a part of the outer circumference of the ring-type controller, so that the ring-type controller is prevented from rotating freely during operation or a predetermined position is set as a home position of the thumb to be operated. In addition, an LED 204 indicating the operation mode is mounted. In addition, the positional relationship between the push switch, the touch pad, the protrusion, and the LED is not limited to this order. In addition, the left ring-type controller 400 may have the same appearance as that in FIG. 6 , or may have a structure symmetrical on the left and right sides with respect to that in FIG. 6 .

FIG. 7 is a hardware configuration diagram of the right ring-type controller 300. As shown in FIG. 7 , an acceleration sensor 211, a gyro sensor 212, and a geomagnetic sensor 213 for detecting movement are provided, and a touch pad sensor 214 for detecting the movement direction, speed, and distance of a finger touching the touch pad, a push switch detector 215 for detecting on/off of the press switch, and a short-range wireless communication device 216 are provided. In addition, a right controller control unit 210 controls all of these. In addition, a battery, a connector for charging, an LED driver, and the like are omitted herein.

FIG. 8 is a diagram showing an activation operation of the ring-type controller in the present embodiment. As shown in FIG. 8(a), when pairing with the HMD by short-range wireless communication for the first time, it is possible to perform pairing by long-pressing the press switch 201 with the HMD in the pairing mode to exchanging authentication data therebetween. Once paired, the press switch 201 of the ring-type controller is long-pressed to activate the ring-type controller as shown in FIG. 8(b). At this time, if the paired HMD is within the range where communication can be performed, the pairing is automatically performed. In addition, when a sleep mode is set due to no operation for a while, the sleep may be released by short-pressing the press switch 201. In this manner, it is possible to input different operations according to the length of time during which the press switch is pressed.

FIG. 9 is a diagram showing a vector definition of the movement direction of the left and right ring-type controllers in the present embodiment. FIG. 9(a) shows the right ring-type controller 300 worn on the right hand and its X, Y, and Z coordinate system. When the right ring-type controller 300 worn on the right hand moves from a certain position, the acceleration sensor 211, the gyro sensor 212, and the geomagnetic sensor 213 can detect, from the difference between the X, Y, and Z coordinates of two points having a predetermined time interval therebetween, in which direction, at what speed, and by which distance the right ring-type controller 300 has moved. In addition, FIG. 9(b) shows the left ring-type controller 400 worn on the left hand and its X, Y, and Z coordinate system, and the left ring-type controller 400 worn on the left hand can similarly detect how the left ring-type controller 400 has moved. By using the two left and right ring-type controllers in this manner, the two cursors can be operated independently at the same time.

Here, the ring-type controller can be operated in both a case where one ring-type controller is used and a case where left and right ring-type controllers are used independently, but various operations can be realized by using two controllers at the same time. For example, when the movement directions of the right ring-type controller 300 worn on the right hand and the left ring-type controller 400 worn on the left hand are detected with the same X, Y, and Z axes as references, it is also possible to detect the relative movement positions of the two ring-type controllers during a predetermined time interval. For example, on a smartphone, an operation of placing two fingers on the screen and widening the distance between the two points to increase the display size can be easily realized by using the two ring-type controllers.

FIG. 10 is an example showing an image object displayed on one lens unit of the HMD glasses and its movement direction. Figure objects of Δ, ο, □ are displayed on the glass portion of the HMD, and the objects are moved according to the movement directions X, Y, and Z of the right ring-type controller worn on the right hand in FIG. 9(a), for example. At this time, not only in the same plane directions X and Y as the lens surface of the HMD but also in the Z direction that is a depth direction, the objects are displayed as if the objects were moved in perspective (front and back) by using the enlargement and reduction of the figures. In this manner, it is possible to perform operations such as moving the display object in the up, down, left, right, front, and back directions by using the ring-type controllers.

FIG. 11 is a diagram showing operations when activating two ring-type controllers and when stopping the two ring-type controllers in the present embodiment. FIG. 11(a) shows a case of starting two simultaneous operations. By long-pressing the press switch of the right ring-type controller to activate the right ring-type controller and then long-pressing the press switch of the left ring-type controller to activate the left ring-type controller, an operation as a dual mode in which two ring-type controllers are operated at the same time is possible. In addition, as shown in FIG. 11(b), in the dual mode state, by long-pressing the press switch of the left ring-type controller to stop the left ring-type controller and set a single mode and then long-pressing the press switch of the right ring-type controller to stop the right ring-type controller, an operation of stopping the two ring-type controllers is possible. In this manner, it is possible to specify different operation inputs according to the relationship between the timings of pressing the respective press switches.

FIG. 12 is a process flowchart when connecting two ring-type controllers to the HMD in the present embodiment. In FIG. 12 , first, the process of connecting the ring-type controllers is started in S900. Then, in S901, the initial setting of pairing with the HMD is performed. Then, in S902, it is checked whether the pairing with all the ring-type controllers has been completed. If there is a ring-type controller for which the initial setting of the pairing has not been completed, the initial setting is performed in S901. Since the initial setting of the two pairings has been completed, S902 in this example is yes. Then, in S903, one ring-type controller is recognized to perform pairing. In S904, another ring-type controller is recognized to perform pairing in the same manner. Then, in S905, the operation mode of the two ring-type controllers is determined. If necessary, the operation mode of the two ring-type controllers is switched in S906. At the end, one ring-type controller is stopped in S907, and then another ring-type controller is stopped in S908. By such a process, the two ring-type controllers and the HMD can be paired and operated.

FIG. 13 is a diagram showing an operation of switching the operation mode in the dual mode by using the two ring-type controllers in the present embodiment. Here, the operation mode is, for example, an application switching mode, a voice input receiving mode, a display mode such as switching the display from the right lens to the left lens, or a sunglasses mode in which the glass portion of the HMD is made into sunglasses. FIG. 13 shows an operation for switching from mode A to mode B, and shows an operation to switch the mode by pressing both the press switches twice at the same time while the two ring-type controllers are operating in the dual mode.

FIG. 14 is a diagram showing another operation for switching the operation mode in the dual mode in the present embodiment. FIG. 14 shows an operation for switching from mode C to mode D, and shows an operation to switch the mode by pressing the left and right press switches alternately twice while the two ring-type controllers are operating in the dual mode. Here, the operation mode to which modes A to D are assigned depends on the user's settings, and is not particularly limited.

In addition, FIG. 15 is a diagram showing still another operation for switching the operation mode in the dual mode in the present embodiment. As shown in FIG. 15 , in the dual mode state, an operation of long-pressing the press switches of the two ring-type controllers at the same time is defined. For example, if this mode corresponds to the starting point reset for determining the starting point of the operation of the two ring-type controllers, this mode is set to detect the movement of the position with the position in space of each ring-type controller at that time as a starting point. When the two ring-type controllers move independently from the position, the trajectory of the difference is detected as the amount of change, so that it is possible to perform an operation according to the trajectory.

In addition, FIG. 16 is a diagram showing still another operation for switching the operation mode in the dual mode in the present embodiment. As shown in FIG. 16 , in the dual mode state, a mode is defined in which the press switch of the right ring-type controller is long-pressed and the left ring-type controller is operated within the period. For example, in a mode in which the cursor moves while the press switch of the left ring-type controller is being pressed, if the operation of the left ring-type controller is performed while the press switch of the right ring-type controller is being long-pressed, definitions such as moving the cursor to twice the distance of normal operation can be made. In addition, instead of the press switch, an operation of touching the touch pad of the left ring-type controller and moving a finger can also be similarly defined.

In this manner, by operating the two ring-type controllers at the same time, it is possible to input different operations according to the relationship of the length of time during which each press switch is pressed or the timing of pressing, so that various operations can be defined by the cooperative operation of the operation inputs of the respective ring-type controllers.

FIG. 17 is a diagram showing a configuration example when ring-type controllers are connected to a game machine. Two ring-type controllers are connected to a game machine 700 by communication, and it is possible to input the operation of the game machine 700 independently by the two ring-type controllers or in cooperation with each other. The output of the game machine is displayed on a TV 800. In this manner, it is also possible to use the ring-type controller as an operation input device for a game machine.

In addition, the ring-type controller described above is an external operation device for operating the HMD or the game machine, but may be a device worn on the body of the user who uses the HMD or the game machine because it is good if the burden of wearing on the user can be reduced. For example, a bracelet type or wristwatch type ring-type controller worn on the user's wrist may be used.

In addition, in the above description, an example is shown in which the ring-type controller is operated by being connected to the HMD or the game machine, but the devices to be operated are not limited to these. For example, a smartphone, a tablet PC (Personal Computer), and any device that can switch the operation according to input, such as an operation from a remote control device, can be applied.

As described above, according to the present embodiment, it is possible to provide an HMD system capable of reducing the burden of wearing on the user while improving operability by realizing various input operations on the HMD, an HMD used therefor, and an operation method therefor.

While the embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and includes various modification examples. For example, the above embodiment has been described in detail for easy understanding of the present invention, but the present invention is not necessarily limited to having all the components described above. In addition, some or all of the components described above may be configured in hardware, or may be configured to be realized by executing a program using a processor.

REFERENCE SIGNS LIST

-   100 HMD -   200 Smartphone -   300 Right ring-type controller -   400 Left ring-type controller -   500 Server -   600 External network -   700 Game machine -   800 TV -   123 Short-range wireless communication device -   130 Controller -   131 CPU -   132 Memory -   133 Program -   134 Information data -   135 Operation control -   150 Display -   201 Push switch -   202 Touch pad -   203 Protrusion -   204 LED -   211 Acceleration sensor -   212 Gyro sensor -   213 Geomagnetic sensor -   214 Touch pad sensor -   215 Push switch detector -   216 Short-range wireless communication device 

1. A head mounted display system in which a head mounted display allowing an operation input from an external operation device is connected to a plurality of external operation devices, wherein the external operation device is a device worn on a body of a user who uses the head mounted display, includes a sensor for detecting movement, and transmits operation information by moving the external operation device, the head mounted display includes a short-range wireless communication unit and an operation control unit, operation information from the plurality of external operation devices is received through the short-range wireless communication unit, and the operation control unit executes a predetermined operation based on the operation information received from the plurality of external operation devices.
 2. The head mounted display system according to claim 1, wherein, when the number of external operation devices connected to the head mounted display is two or more, the head mounted display executes a predetermined operation by cooperative operation of operation inputs of the respective external operation devices.
 3. The head mounted display system according to claim 2, wherein the predetermined operation is executed based on a relative movement amount of each of the external operation devices in the same coordinate system.
 4. The head mounted display system according to claim 1, wherein the external operation device for performing the operation input is a ring-type controller worn on the user's finger.
 5. The head mounted display system according to claim 4, wherein the external operation device includes a press switch, and different operations are input according to a length of time during which the press switch is pressed.
 6. The head mounted display system according to claim 5, wherein, when two or more of the external operation devices are connected to the head mounted display, different operation inputs are specified according to a relationship between timings of pressing the respective press switches.
 7. The head mounted display system according to claim 5, wherein the external operation device includes a touch position sensor for detecting a position touched by a finger, so that a direction in which the touch position of the finger has moved can be detected and an operation of the head mounted display can be input according to the movement direction, and when two or more of the external operation devices are connected to the head mounted display, different operations are input according to a combination of a time during which the press switch of one external operation device is pressed and movement of the touch position of the finger on the other external operation device.
 8. A head mounted display allowing an operation input from an external operation device, comprising: a short-range wireless communication unit; and an operation control unit, wherein operation information from a plurality of the external operation devices worn on a body of a user who uses the head mounted display is received through the short-range wireless communication unit, and the operation control unit executes a predetermined operation by cooperation of the received pieces of operation information from the plurality of the external operation devices.
 9. The head mounted display according to claim 8, wherein the operation control unit executes the predetermined operation based on a relative movement amount of each of the external operation devices in the same coordinate system.
 10. A method for operating a head mounted display allowing an operation input from an external operation device, wherein the head mounted display can be connected to a plurality of the external operation devices worn on a body of a user who uses the head mounted display, and a predetermined operation is executed by cooperative operation of operation inputs of the plurality of external operation devices.
 11. The method for operating a head mounted display according to claim 10, wherein the predetermined operation is executed based on a relative movement amount of each of the external operation devices in the same coordinate system. 